Charging valve or door for furnaces, gas producers, retorts, and similar structures



1.501216 HARDMAN I NACES, GAS PRODUCERS REPORTS, AND SIMILAR July 15 1924.

J. CHARGING VALVE OR DOOR FOR CTURES Filed Aug. 1922 STRU 29 Fig.1.

' INVENTOR dfimm Fig.2.

Patented July 15, 1924,

JAB/[ES H. HARDMAN, F PENDLETON, SALEORD, ENGLAND.

CHARGING VALVE OR DOOR FOR FURNACES, GAS PRODUCERS, RETORTS, AND SIMILAR STRUCTURES.

Application filed August 29, 1922. Serial No. 585,091.

To all whom it may concern:

Be it known that I, JAMEs HERBERT Ham MAN, a British subject, residing at Pendleton, Salford, county of Lancaster, England,

have invented certain new and useful Improvements in Charging Valves or Doors for Furnaces, Gas Producers, Retorts, and Similar Structures, of which the following is a specification.

This invention relates to closing or charging valves or doors such as are employed on furnaces, gas producers, and retorts, in which a dome or convex shaped valve is carried on a rocking bar and held in closed position by a counterweight, and which may be applicable for other purposes such as sewage outfalls.

According to the invention a rotary movement is imparted to the valve or door, as it approaches or recedes from its seat to free it of any obstructing particles of fuel, and means are also provided whereby it can be ground to its seat while in position,

The invention will be fully described with reference to the accompanying drawing in which as an example it is shown applied to the head of a gas producer.

Fig. 1 is a transverse sectional elevation.

Fig. 2 is a sectional plan with the door A removed.

Fig. 3 is a front sectional elevation of the shaft H and its hearing.

The valve or door A is of ordinary dome shape mounted on the end of a lever B carried by a rocking bar or shaft C which passes inside the furnace or retort top and is held to its seat a 'below a charging aper ture by a lever and counterweight W on the outside.

The valve or door A is mounted upon a stud or pivot D carried at the end of its supporting lever B upon or about which it can rotate being preferably pivoted on a ball and socket joint (Z. A bevel or other wheel E is aflixed to the underside of the door A by which it can be rotated. A second bevel or other wheel F is fitted upon the supporting lever B free to rotate thereon and gearing with the wheel E affixed to the door. The Wheel F is formed with a third wheel G on the same boss or affixed to it ,so that the two work together, and prefbut free to rotate in, the interior of the wheel K.

While the shaft H and wheels K, G, F, are normally held stationary by a pin Z, key or other locking device, the shaft and wheels are also adapted to be rotated, and the shaft is fitted with a hand wheel L at its outer end for the purpose,

The shafts C and H are journalled in bearings and stuffing boxes M of ordinary construction. In operation when the wheel K is stationary the ordinary movement of the rocking shaft C to open and close the valve or door A causes the wheels G, F and E and with them the door A, to rotate as it recedes from and approaches its seat 0;, and when the rotary shaft is unlocked it can be rotated by the hand wheel L to rotate the valve or door to grind it to its seat which may be a turned metal ring a fitted below the mouth of the charging aperture.

What I claim as my invention and desire to protect by Letters Patent is 1. The combination with a closure door of dome shape, of a rocking shaft and lever ing shaft of a gear wheel affixed to the door,

a bevel wheel loose on the supporting lever gearing therewith, a second bevel wheel loose on the supporting lever and attached to theother wheel and a bevel wheel gearing therewith afiixed to a shaft normally held stationary to impart to the closure door a rotary movement es it approaches to and In testimony whereof I have hereunto set recedes from its seat substantially as demy hand in presence of two subscribing Witscribed. nesses.

3. Apparatus as claimed in claims 1 and J. H. HARDMAN. 5 characterized by means whereby the closure Witnesses:

door can be rotated to grind it to its seat J. OWDEN OBRIEN, substantially as described. GEO. H. OBRIEN. 

